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g100num [7]
3 years ago
12

Help solve this matrix question

Mathematics
2 answers:
Anna007 [38]3 years ago
7 0

Answer:

The correct answer is A -6/17

umka21 [38]3 years ago
7 0

Answer:

A

Step-by-step explanation:

Multiply each component of the matrices by the scalar, that is

\left[\begin{array}{ccc}-4a\\-4b\\\end{array}\right] = \left[\begin{array}{ccc}180\\-510\\\end{array}\right]

Equate corresponding elements, that is

- 4a = 180 ⇒ a = - 45

- 4b = - 510 ⇒ b = 127.5

Hence

\frac{a}{b} = \frac{45}{127.5} = - \frac{6}{17} → A

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Answer:

Semi-annually: A = $24 178.51

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Step-by-step explanation:

The formula for compound interest is

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  = $24 224.13

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